163563120 has 480 divisors, whose sum is σ = 701955072. Its totient is φ = 33251328.

The previous prime is 163563109. The next prime is 163563133. The reversal of 163563120 is 21365361.

163563120 is a `hidden beast` number, since 1 + 6 + 3 + 5 + 631 + 20 = 666.

163563120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1970599 + ... + 1970681.

Almost surely, 2^163563120 is an apocalyptic number.

163563120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163563120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350977536).

163563120 is an abundant number, since it is smaller than the sum of its proper divisors (538391952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163563120 is a wasteful number, since it uses less digits than its factorization.

163563120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 163563120 is about 12789.1798016917. The cubic root of 163563120 is about 546.8838881603.

The spelling of 163563120 in words is "one hundred sixty-three million, five hundred sixty-three thousand, one hundred twenty".